Low levels of essential nutrients such as biotin, iron, zinc, or magnesium can weaken nails and ridges. Since nutrient metabolism and absorption can decline with age, deficiencies become more likely after age 40.
In some cases, vertical ridges can indicate health problems such as poor circulation, thyroid imbalance, or even rheumatoid arthritis. If you notice other symptoms such as fatigue, brittle hair, or changes in skin texture, it’s worth consulting a doctor. Shop for vitamins and supplements.
When should you be concerned?
While vertical ridges are usually benign, you should
